Segmented oxygen supply self-circulation denitrification reactor

The present invention discloses a self-loop segment oxygen denitrification reactor. Reactor body provided with the water distribution area, the reaction zone, separation zone and the recirculation zone, the water distribution area is provided mud tubes and inlet pipe; oxygen staging the reaction system combined reaction zone consists of three modules, a lower intake pipe I is provided , the upper end of the intake pipe is provided aeration head, an upper packing installation module I, II and III of the same module configuration module I, in the module in series I above; separation zone is provided a partition plate, into a precipitation chamber and outgassing the chamber, the precipitation chamber outgassing the chamber and a plenum chamber disposed below the upper weir disposed precipitation chamber, the tank and outlet, the upper chamber outgassing scum discharge pipe is provided; and reflux valve disposed at reflux pipette recirculation zone, connecting pipe, adjusting into the tube. The present invention subparagraph oxygen, satisfy the bioreactor aerobic, nitrification reinforcing short; self-circulating the reaction solution, to avoid toxicity induced nitrite accumulation, and the proportion of the matrix to overcome the problem of regulation, increase the volume of the denitrification reactor performance.